Cancel your Dokom21 subscription by mail
For Dokom21 the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Letters to Dokom21 go to Dortmund, Germany.
Let Postbye cancel Dokom21 for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with Dokom21.
- 4.8 from 2,931 reviews
- 3 Dokom21 cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Dokom21 by mail
Gather your account details
Check the name and email on the account and, if you have one, an account or customer number before anything else. A request that does not match the account on file at Dokom21 is the easiest one to set aside.
Write your request
The request is prepared in German (template de), under the subject line “Betreff: Kündigungsanfrage – [your name]”: end the subscription, stop all further charges and confirm in writing to you.
Send it by certified mail
Take the letter to the post office and ask for certified delivery to 44269 Dortmund. Keep the tracking number it gives you.
Save the tracking record
The receipt dates your request. Look at your next statement for any Dokom21 charge after that date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Dokom21 cancellation letter goes
The mailing address we hold for Dokom21 is Stockholmer Allee 24, 44269 Dortmund, Germany.
Postal code 44269 places the address in Nordrhein-Westfalen, Germany.
Your name, address and email appear in a short block labelled Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse, under the greeting “Sehr geehrte Damen und Herren,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Dokom21, with the envelope wording
Before you cancel Dokom21, check these
- Check your next statement: no charge should appear after the cancellation date.
- Look for annual or multi-month plans. A plan paid in advance usually runs to the end of the period you paid for.
- Write well before the next billing date. A request that arrives after it can leave one more charge on your statement.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Dokom21 for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
How cancelling by mail works
Most subscriptions keep billing until someone tells the company to stop, and a dated letter is proof that somebody did.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Dokom21 cancellation at a glance
- How Dokom21 accepts cancellations
- By mailed letter
- Mailing address on file
- Dokom21 Stockholmer Allee 24 44269 Dortmund Germany
- Country
- Germany
- Letter language
- German (template de)
- Added to the database
- May 19, 2026
- Data last checked
